A newer version is available. For the latest information, see the current release documentation.
« Malware - Prevented - Elastic Endpoint MsBuild Making Network Connections »
Elastic Docs ›SIEM Guide [7.6] ›Detections (Beta) ›Prebuilt rule reference

Mknod Process Activity

edit
IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Mknod Process Activity

edit

The Linux mknod program is sometimes used in the command payload of a remote command injection (RCI) and other exploits. It is used to export a command shell when the traditional version of netcat is not available to the payload.

Rule indices:

  • auditbeat-*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

References:

Tags:

  • Elastic
  • Linux

Rule version: 1

Added (Elastic Stack release): 7.6.0

Potential false positives

edit

Mknod is a Linux system program. Some normal use of this program, at varying levels of frequency, may originate from scripts, automation tools, and frameworks. Usage by web servers is more likely to be suspicious.

Rule query

edit
process.name: mknod and event.action:executed
« Malware - Prevented - Elastic Endpoint MsBuild Making Network Connections »